<?php $a->b->c->d->e->f->g->h->i->j =& $null;
Standard input is empty
stdClass Object ( [b] => stdClass Object ( [c] => stdClass Object ( [d] => stdClass Object ( [e] => stdClass Object ( [f] => stdClass Object ( [g] => stdClass Object ( [h] => stdClass Object ( [i] => stdClass Object ( [j] => ) ) ) ) ) ) ) ) )